[Scintigraphy studies of lymph flow in paralyzed upper extremities]

Area of Science:

• Medical Science
• Physiology
• Rehabilitation Medicine

Background:

• Edema is frequently observed in paralyzed limbs, complicating patient rehabilitation.
• The underlying causes of edema in hemiplegic limbs remain unclear.

Purpose of the Study:

• To investigate the origin of edema in paralyzed limbs of hemiplegic patients.
• To differentiate edema in hemiplegia from lymphedema.

Main Methods:

• Study included 48 patients with hemiplegia and arm edema.
• Lymphoscintigraphic studies (static and dynamic lymphography) were conducted in 40 patients.

Main Results:

• Lymphatic flow in the paralyzed arm was increased in 80% of cases compared to the healthy arm.
• A significant correlation was observed between marked edema and increased lymphatic flow (p < 0.01).

Conclusions:

• Edema in hemiplegic extremities is unlikely to be lymphedema, which typically presents with slow lymph flow.
• The findings suggest edema is caused by filtration and reabsorption disorders linked to autonomic nervous system dysfunction.